![]() For example, if you feel like your bike is skipping off rocks or bouncing down the trail, you should slow your rebound (clockwise turn). The tinkerers among us may want to play with other settings based on terrain, skill, or personal preference though. (77-81 kg.) and ride a Hightower XO1 build, you’ll want six clicks of LSR and five clicks of HSR on your FOX 36 fork and four clicks of LSR on your Rockshox Super Deluxe Ultimate. Our engineers recommend values for rebound damping based upon spring rate, which can be found in the Shock Setup section for your bike. Rebound - Rebound damping adjustments control how quickly your spring returns to it’s original sag position. Note: when making adjustments, always start with your lever or knob in the “closed” position. Likewise, turning the dial counter-clockwise opens the faucet and allows fluid to flow more easily. These adjustments are like a sink faucet, where turning the dial clockwise closes the faucet and makes it harder for fluid to flow. High-speed impacts come from square-edged things like rocks and roots. Low-speed impacts come from rolling terrain and our body-weight moving around on the bike. When we talk about speed as it relates to suspension, it's not about the speed the bike is going, rather it's the speed the suspension is moving. Some high-end suspension components have four adjustments-two for high/low speed rebound (HSR/LSR) and two for high/low speed compression (HSC/LSC). There are at least additional two levers or knobs on the suspension components that come on our bikes-one for rebound, and one for compressions. Sweet, and how do you do it for your fork? If your actual number is different than your target number, increase or decrease your air pressure and redo the sag measurement procedure until you get it in range. Once again with the Hightower example, if that distance measures 16mm and the stroke is 55mm, it's 16/55=.29, or 29% sag.Ĥ. Once you’re off the bike, measure the distance between the o-ring and the seal of your shock and divide that number by your stroke length to get the percentage, which is your amount of sag. Next, carefully get off your bike without bouncing-you can use your brakes now if you need to. Then, slowly and carefully reach down and push that o-ring up against the body of your shock, still with your fingers off the brakes. Bounce up and down a few times without holding your brakes to get your suspension to settle. Mount your bike and assume a balanced, descending position-don’t over exaggerate it, but stand up like you’re about to fly down your favorite descent. ![]() Ensure both your fork and shock lockouts levers are set to fully open, and position yourself next to a wall, or something that you can lightly lean against.ģ. Also, put any items you carry in/on your bike in place as well–this includes water bottles, and items in your Glovebox internal storage compartment. Make sure you’re dressed in your riding kit and gear-sag is very sensitive to weight, so if you normally wear a pack filled with water, strap that on along with your helmet and riding shoes before you jump on your bike. So grab a ruler and we can get started.Ģ. ![]() You know that little rubber band-looking thing on the shaft of your rear shock? It’s an o-ring, and it's used to measure your sag. That’s all fine and dandy, but how do you get this number for your rear shock? 1. Compression damping controls how fast the suspension can compress, or essentially, how quickly it can respond to an impact, while rebound controls how quickly your suspension recovers from an impact. Further, it also controls the way it compresses during impacts-faster = less damping, slower = more damping. The damper is what keeps the spring, whether air or coil, from sending us over the bars every time the suspension rebounds from an impact. Damping is what controls your suspension by adjusting how oil moves through the valves inside of your suspension. Sticking with the Hightower example, it features a 210 x 55 shock-55mm of stroke and 210mm of total length.ĭamping – All suspension (forks and rear shocks) has two basic components, a spring and a damper. Shocks are measured by total length (eye-to-eye) and stroke (travel on the shock). Knowing how much stroke your shock has is important because it will let you translate a percent of recommended sag to an actual number you can measure. While a Hightower, for example, has 145mm of rear travel, the shock only has 55mm of stroke. Shock stroke – For a rear shock, Shock Stroke measures how much total travel in millimeters that your shock has–which is different than how much travel your bike has. If you're running a coil shock or fork, it's adjusted by changing out the spring itself for one with the correct spring rate, which is measured in pounds. With an air shock, it's adjusted by increasing or decreasing air pressure. Sag – Sag is the amount suspension travel used with just the rider's weight on the bike.
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